on ubuntu, how can I check the author, date/time created, information of a .docx file?

Using ExifTool (Recommended)

ExifTool provides comprehensive metadata, including author, creation date, modification time, and last saved by. 

1. Install ExifTool (if not already installed):
   bash

   sudo apt update
   sudo apt install exiftool
   

2. Run the command to view the metadata:
   bash

   exiftool your_document.docx
   

3. To look for specific fields (like Author or Dates) quickly, you can use grep:
   bash

   exiftool your_document.docx | grep -i "Author"
   exiftool your_document.docx | grep -i "Date"
   

    

How to give author, editor, viewer permissions to room calendars?

On exchange server 2010, Exchange Management Console, mailbox > 'new mailbox' > 'room mailbox' > 'new user' 

On active directory, you will see the new room mailbox, disabled. Enable it. Create a password.

On EMC, 'distribution group' > 'new distribution group', create groups to be given (author, edit, review) permission to the new room mailbox.

Add users to each distribution group.

Log on any computer with the new room user. Open MS Outlook > new room mailbox calendar, grant each group permission to the new room mailbox calendar. (After a user is migrated to Office 365, we then can not add remote user to room calendars)